[pdal] Entwine fails to build after recent PDAL LAS refactoring

[Jim Klassen]

The recent changes to the LAS code broke the entwine build in entwine/util/pipeline.cpp.  It looks like things like `scaleX()` need to be updated to `scale.x`.  I also suspect these changes probably also impact the CloudCompare PDAL plugin.

However, I'm not sure where the fix should be:

Is this a bug in entwine (and likely CloudCompare) for using a pdal API that is intended to be private (and they should be using entirely other means for accessing this information)?

Is this an issue where entwine needs to be updated to match the current pdal API?

Is this an issue in pdal for changing the existing API?

Some/all/none of the above?